#! /bin/sh

# Copyright (c) 2006-2014, Universities Space Research Association (USRA).
# All rights reserved.
#
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# modification, are permitted provided that the following conditions are met:
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#       notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
#       notice, this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
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#       names of its contributors may be used to endorse or promote products
#       derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY USRA ``AS IS'' AND ANY EXPRESS OR IMPLIED
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# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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usage="Usage: $0 <script> [<telemetry-script>]"

# Convenient script for running plexilSimulator (StandAloneSimulator with LCM comms).
# Requires environment variable PLEXIL_HOME to be set to desired working directory,
# i.e. the directory containing universal-exec, interfaces, and apps directories.

# Check environment variables and UE executable
if [ ! $PLEXIL_HOME ]
  then
    echo Error: Please set environment variable PLEXIL_HOME
    echo to the full pathname of your 'plexil' or 'trunk' directory.
    exit 1
fi

# Determine executable
prog=$PLEXIL_HOME/src/apps/StandAloneSimulator/simulator
#prog=$PLEXIL_HOME/bin/simulator

# Make sure executable exists.
if [ ! -e $prog ]
  then
    echo Error: $prog does not exist.
    echo You probably need to build it.
    exit 1
fi

# Not enough arguments?
if [ $# -lt 1 ]
  then
    echo $usage
    exit 1
fi

# Too many arguments?
if [ $# -gt 2 ]
  then
    echo $usage
    exit 1
fi

# Process arguments
cmd_script=$1
tlm_script=$2

# Check scripts' existence
if [ ! -e $cmd_script ]
  then
    echo Error: Script $cmd_script does not exist.
    exit 1
fi
if [ "$tlm_script" -a ! -e "$tlm_script" ]
  then
    echo Error: Telemetry script $tlm_script does not exist.
    exit 1
fi

# Set up environment

. $PLEXIL_HOME/scripts/plexil-setup.sh

# Do it!
if [ "$tlm_script" ]
then
  exec $prog $cmd_script -t $tlm_script
else
  exec $prog $cmd_script
fi
